Automatic train-brake-applying device.



Nm 393,293. PATBNTED mm1, 1903.

` AQ WGAVANAGH 5; A. ALLAN. UTOMA'HG TRMN BRAKE APPLYING DEVICE.

APILIGATIOII FILED BECA, 1307.'

through Fig l Unirse saisir ssgirnnfr OFFICE.

IXLNZO W. (.AVANiillli AIVD ClUR ALLAN 0l" NRTH BAY, ONTARIO, (,ilNADA.

sommarie fri-isis seams-Amarins navos.

Application filed December 4k, 190'?.

V Specification of Letters Patent.

Patented March 31, O.

Serial No. M5123.

.To all 'whom it may concern:

Be it known that we, ALONZO WATSON (JAvANAon and An'rnifn ALL. v railway employees, both ol. the town ol horth Bay, in the district of Nipissing, in the Province ol OntarioJ Canada, have jointly invented cer tain new and useful improvements in Antw matic Train.-Brake-Amilying Devices, lof which the following is a specification.

Uur invention relates to iniprovenients in automatic train brake applying device and the. object ol the invention is to provide a device which may be set by the conductor of a train to automatically apply the brakes at any given distance from the station at which the train orders are received 'and it consists essentially ol athreaded spindle driven from one axle ol the car, a longitudinally movable shaft supported in bearing and connected to the an' v alve ol the train pipe, a scale bar .suitably graduated, a pointer secured to the longitinlinally niovahle har, a nut niovahly supported upon the threaded spindle and also provided with a pointer and means tor' reversing the rotation of the spindle upon the Itrain reversing its n'ioveinent as herein after more particolari y explained by the following specification.

Figure l, is a general perspective View of our device. Fig. 2 is a vertical section In the (rawings like letters of reference indicate corresponding parts in each figure.

A is 'the axle of the car, B is a portion oi the floor thereof,4 C is a back board on which the mechanism. for automatically applying the brake is supported.

Dis a gear easing suitably supported about the axle A and to the bottoni of the oar.

E is aworin secureil to the axle and within the casing D.

F is a vertical spindle secured iu the bearings F and F and in the base ol' tln gear casing which forms a step bearing therefor. E is a worin gear slidably conneefml to the spindle F by the leather key 2.

G is a grooved sleeve secured to the spindle- F.

H is a pivoted lever the l'ork of which eX- tends into the groove of the sleeve Gi The lever His provided with a spring handle Il.

H2 is a quadrant provided with the right angular notches ll"S and. ll* withy which the spring handle il coacts.

l. and l are bevel gears secured to the spindle F.

, 'gear E and l.

l2 is a horizontal spindle supported in the bearings I3 and l?. rlhe spindle l is provided with a threaded portion l and a bevel gear I,

I7 is a stationary bar suitably' secured in the hearing brackets l3 and I4.

i8 is an arm swung on the bar il and longitudinally movable thereon. The outer end of the arm i8 is )rovided with a seinieircular segmental nut 10 the internally threaded portion of which is designed to normally rest upon and engage with the threaded portion l ol the spindle.

l." is a handle by which the arm I8 may be swung upwardly to through-the ortion 11 out oi' engagen'ient with the three( ed portion oi the spindle I2.

J is a longitudinally movable rod held in.

bearings l forming brackets I and I4.

J is a fork extending from the portion Il. T he fork J is arc-shaped and formed concentric to the center of the baril;

il? is a sleeve adjustably secured to the rod il. The rod J is suitably connected to the train line valve and the longitudinal movenient of the rod is designed to open the valve.

J3 is a scale bar suitably divided preferably into miles and half miles. The sleeve l2 is provided with a portion J4 and the movable nut l1" is provided with a pointer l.

Having described the principal parts involved in our invention we sl1 all brielly de scribe the operation of the saine. The conpart of the bearing doctor as soon as he receives his train orders' upon leaving a station sets the mechanism in arcordance therewith by moving the sleeve l loi'igitudinally on the bar l2 so that the pointer J indicates on the scale bar .lil the number of miles away from the .station at which it is desired to apply the brakes. The pointer being shown in the drawing at the ten mile indicating niark, the sleeve being secured in that position. The pointer lla-ol the movable nut l1 is placed opposite the Zero niark of the scale bar. The spindle 'F is driven from the axle A through the worin The s indle l2 is rotated through the gear l and thereby gradually feeding the nur ll" longitudinally on the spindie towards the stationary sleeve l2 at a speed proportionate to the rate of travel of the train. Upon the pointer lli also reaching the ten niile indicating niark the fork J strikes -the sleeve J2 moving it and the rod .l longitudinellyl thereby opening the train valve and applying the brakes. When the train moves in the opposite direction the spring handle of the lever H is relieved from the notch H3 and depressed until it rests in the notch II? and thereby lowering the spindle F and bringing the bevel pinion I into engagement with the gear I6 and carrying the gear I out of engagement With the gear I so that the spindle I2 Will'be driven in the same direction no matter which Way the train is moving.

From this descri tion it will be seen that We have provide a simple mechanism Wherebv the brake of a train may be automatically applied at any desired distance from the station at which the conductor receives his train orders.

Vliyhat We claim as our invention is:

l. In an automatic brake applying device, the combination with the train valve and the car axle of a movable member operated from the car axle, a slidable member adjustably and normally supported at a distance from the movable member and connected to the train valve and means operated by the axle' for gradually movi the movable member into contact With t e slidable member to rncve the same, as and for the purpose specine 2. In an automatic brake applying device, the combination with the train valve and the car axle, of a raduated scale bar, a longitudinally slidab e bar connected to the train valve and provided with a pointer coactin with the scale bar, a threaded spindle paralle to the said bar, a nut therein designed to be fed longitudinally over the threaded spindle into contact With the ointer and means o erated by the axle of t e car for rotating t e spindle as and for the purpose s eciiied.

3. In an automatic brake app ying device, the combination with the train valve and the car axle, of a graduated scale bar, longitudinally movable slide bar, a stop adjust ly secured thereto, a pointer on the stop coactin with the scale, a threaded spindle supported parallel to the bar and in suitable bearings, a rod parallel to the threaded screw spindle, an arm swung on the rod, a segmental nut forming part of the arm and meshing with the threaded spindle and designed to engage with the stop on the slidable bar and means for rotating the spindle from the axle as and for the purpose specified.

4. In an automatic brake applying device, lthe combination with the train valve, car axle, scale bar, threaded s indle, the nut meshing with the ,spindle an the stop on the bar, of a worm on the axle, a vertical movable shaft, a worm gear slidably held therein, a bevel gear on the threaded spindle, a pair of bevel pinions on the vertical shaft and designed to be alternately brought into engagement with the bevel gear by the vertical movement of the shaft and a suitable' lever and rack designed to give such 'vertical adjustment to the shaft as and for the purpose specified.

v 5. In an automatic brake applying device, the combination with the train va ve, car axle, scale bar, threaded spindle, the nut meshing with the spindle, and the stop on the bar, of a worm on the axle, a vertical shaft, a Worm Wheel thereon meshing with 

